The Application of Quality Function Deployment for the Development of Rubber Sheet Machine

This research aims to find suitable ways to develop a rubber flat sheet extrusion machine. To meet the needs of customers by applying qualitative distribution techniques by exploring the needs of The sample farmers in the 4 provinces with a large amount of rubber flat sheet production in the Northeastern region are Sakon Nakhon Province, Nakhon Phanom Province, Mukdahan Province and Bueng Kan Province, which have two operating procedures, Part 1 . Is to collect customer requests by interviewing Then group the customer demand factors with a link group chart to bring out the questionnaire and to find the weight score of the importance of each factor of the development of rubber sheet extrusion machine Part 2 is to build a quality house to find technical requirements. Relationship between technical specifications and the relationship between customer demand factors and technical requirements. By scoring the correlation and ranking the result was the time of extruding the rubber. The weight was 13 1 .2 , the relative priority (% Relative) 7.99, the thickness-thin adjustment was 118.5, the relative importance (% Relative) 7.22 and the size of the rubber sheet. The weight was 114.4 priority by comparison (% Relative) 6.98, respectively.


Introduction
Successful and innovative product (or service) development is highly correlated with the company's success and reason for existence. It is imperative that a company's main purpose for existing is to provide goods and/or services to meet and even exceed the expectations of their customers. In order to be successful, companies must choose goods and/or services in which to establish a competitive advantage, and by doing so, differentiate themselves from their competitors. [1]Increasing complexity in new product development (NPD) is a common concern in both academic and industrial practice, resulting in a growing body of new and updated innovation methodologies. [2][3]Quality function deployment (QFD) is a well-established and particularly powerful methodology providing a systematic procedure for assuring product designs and production processes are driven by customer requirements. QFD rests on the ability to make effective design trade-offs, which are central to decision-making. [4][5]The innovative product life cycle is the main subject of the new product development (NPD) framework. In this context, the QFD methodology can be used in order to avoid the development of a new product that will not be a success on market and to minimize the costs of development. This represents a tool that can help companies to successfully develop new products or to improve the existing ones through a series of innovation related steps, starting from the process of idea generation and ending at the launch of the product into the market. [6]Quality function deployment (QFD) techniques are techniques that help design and improve the quality of products to meet customer needs. It is a technique that focuses on customer satisfaction and customer focus by taking feedback from customers to study and identify their true needs. And find a way to do it to achieve such requirements appropriately, the mistakes in the new products of the quality do not meet customer needs. Helps to shorten the product development time It is also possible to avoid design changes while production has begun, as well as enabling teamwork as decisions are largely based on consensus. Therefore, a common goal was formed ISSN: 00333077 4722 www.psychologyandeducation.net All members contribute to feedback on the development of new products. In cooperation with to be smooth and accuracy in product design and manufacturing operation. [7][8][9]In addition to the design and manufacture of souvenirs, quality houses are applied. (House of quality; HOQ), which is a matrix in QFD, was used to develop packaging of milled rice as a souvenir. To link customer needs to design Products by assessing customer satisfaction It was found that 83.11% of the original products were wedding favours and 7 9 .7 6 % were gifts or souvenirs. This technique contributes to product and packaging development. Packaging to meet the needs of users [10] For research work related to Pottery QFD technique was applied to the design and development of automatic pottery wheels for Small Enterprise Small and small in Indiaby collecting data and then converting customer needs. It comes as a technical specification. Before designing and developing automatic pottery wheels in the design also Consider other issues including the mechanism of the machine. Usability, safety and ergonomics. [11]For other industries such as the food industry, durian chips have been developed using the QFD technique by converting customer needs into technical requirements for improving and developing the quality of durian chips. Found that 5 features The important quality of fried durian Which is the requirement of customers such as having a natural smell, crispy, thin sheet style, no rancid smell It has a natural flavour and when converted to technical requirements that need to be improved, it was found that the top five technical requirements were baking after frying and baking before customer or retail delivery, packaging development and improvement. Variety of flavour enhancements The retention period is appropriate and the grading of the durian. [12]At present, the rubber plantation profession can be an export product and make a lot of income into the country, but at present, the rubber production process is still very difficult and takes a long time and the product quality is not good enough as the market needs and in Manufacturing still requires labour in every step of the production. This makes gardeners have little time to rest and do not have time to do additional professions for income besides rubber production. For this reason, the idea was to create a semi-automatic rubber calendar to replace human labour. And reduce the production time of rubber So that farmers have more time to do additional jobs to have more income to support the family.
This research focuses on the application of qualitative functional distribution techniques to guide the development of smooth rubber products. To meet the needs of customers Including adding product value Promote local products for sustainable development and will continue to be needed in both domestic and international markets.

Research objectives
To find a way to develop rubber sheet machine to meet the needs of customers for both domestic and international sales. By applying quality function deployment techniques.

Product design and development process
In practice, product design and development processes are often non-sequential. Each step has absolutely no beginning and ending. In fact, these activities are born Overlapping and repeating over time, as in Fig. 1, there is a reverse dashed arrow indicating the uncertainty of progress. We may find that information comes up in a particular step, or the results of a particular process may require the team to revert to one activity before moving on. The process is economic analysis. Comparison with competing products Building and testing models and

Research method 1.Quality Function Deployment: QFD
Voice of Customer: VOC by surveying customer demand for rubber sheet products with group meeting techniques. From the sample farmers in the 4 provinces with a large amount of rubber flat sheet production in the Northeastern region, namely Sakon Nakhon Province, Nakhon Phanom Province, Mukdahan Province, and Bueng Kan Province, as the target group of rubber processors and buyers. A total of 85,058 individuals categorized the same desirable factors or desires. To be the same requirement They were then organized into categories with group charts, linking and analyzing the initial needs of customers towards flat rubber products using a tree chart to collect similar or duplicate needs into categories.
The results were analyzed by using sensory testing using Hedonic Scale Method questionnaire, which is the most commonly used method for customer acceptance testing. [14]And random sampling The target group of buyers of smooth rubber products was used by the tester to observe and assess the overall picture with a questionnaire with a scale of approximately 1 -5 (5-Point Hedonic Scale). 85,058 sets of data were collected from the sample farmers in the district. The four provinces with a large amount of rubber flat sheet production in the Northeast Region are Sakon Nakhon Province, Nakhon Phanom Province, Mukdahan Province, and Bueng Kan Province by using the method of calculating the number of samples from the sample size tables of Taro Yamane. At 95% confidence level, tolerance size + 5 % population size>1 0 0 ,0 0 0 people. [15]And calculating the score obtained from the questionnaire using Geometric Mean as equation 1, which is the most reliable means It is often used with data from questionnaires that are characterized as a grade selection. From the information received.
Geometric Mean = (N1*N2*N3*…*Nn) 1  The results of the Customer Demand Survey and the Importance Rating (IMP) of the product are then considered by converting them into technical specifications. That can meet the needs of customers Finding the relationship between technical specifications and customer requirements with technical requirements. It is written in the form of a correlation matrix and is used to indicate the degree of relationship [17] Level (AI) by converting the symbol to the correlation score. Then multiplied by the highest score for each factor of demand (IMP) of the smooth rubber sheet machine as equation 2 AI = ∑(Relationship between technical requirements and customer needs x IMP) (2) And to find the weight of significance (% Relative) which is calculated as equation 3

% Relative = (AI / ∑AI) x 100 (3)
And prioritize the technical requirements and select the top 5 technical requirements with the highest% Relative value as a guideline for the development of rubber sheet machine.

Results of the application of Quality function deployment
From collecting the voice of customer requests to obtain the factors of customer demand for rubber flat sheet presses. This makes it known to the characteristics that the customer is satisfied with and what to expect in the flat rubber products. It is a fact finding out from customers in terms of their attitude towards smooth rubber products on the general market. Which can summarize the needs of 19 factors as follows 1. Can press rubber continuously.

No vibration in use.
3. Can be ironed as required. 4. The speed can be adjusted. 5. Can iron sheets to a uniform size. 6. Can be ironed in a long time. 7. Can adjust the distance of the ball print pattern. 8. Can adjust the rolling ball accordingly. 9. Can be easily controlled in the work. 10. Can be used with household electrical system. 11. There is safety while working. 12. There is a manual that is easy to read and understand before working. 13. Easy repair and maintenance of materials 14. Disassemble and assemble equipment to work. 15. The structure of the machine is strong. 16. Have a weight suitable for work. 17. The size of the machine is suitable for use. 18. The machine is suitable, can be moved easily. 19. The price is reasonable for the sample.
Group customer needs Which can be grouped into two groups of customer demand factors: the functionality of the machine and the shape and size of the machine for marketing, it consists of the price of the machine. As for the machine side, the rubber sheet extrusion consists of rubber extrusion time / adjustment of the thickness -thin / size of rubber sheet. Physical feature Raw materials are standard sizes with both groups comprising 19 factors of sub-customer demand.
Bring data on the needs of rubber sheet extrusion machine. Come to do a questionnaire with the target customers. To determine the ISSN: 00333077 4725 www.psychologyandeducation.net importance of weight score for each factor. By dividing the questionnaire into 3 parts Part 1 General information of respondents The survey of the behavior of rubber processing farmers towards the rubber flat sheet press was used by coincidentally sampling with a group of farmers in 4 provinces, namely Sakon Nakhon Province. Nakhon Phanom Province Mukdahan and Bueng Kan Province, which has 85,0 5 8 members, referring to the table showing population and sample numbers of [18]The target group was less than 100,000 people, therefore, 3 8 4 target groups were required to collect data, found that most of them were male, 62.37 percent, age 35-44, 42.21 percent, high school education, 5 7 .3 8 percent were farmers / private businesses. 6 8 . 2 5 each with monthly income in the range 10,001-20,000 baht, 34.28%, taking into account the daily processing volume of 8 3 . 2 5 % , the products processed are rubber 7 8 . 7 3 % , selling products that are processed from rubber by themselves, 8 0 . 6 7 % sell products that are processed from rubber, 1 -per week 2 times, 5 3 . 2 5 % , the interest in the rubber flat sheet extrusion machine 87.50% If the rubber flat sheet press has a prototype, there is a need to try out 8 5 . 6 7 % . In addition to the traditional rubber products processing then Most farmers need tools or inventions. To help reduce the working time of 62.38 percent. Part 2, the level of demand for each factor toward the rubber flat sheet extruder and the third part, the satisfaction level of each factor affecting the rubber flat sheet extruder, were found. Weight score of each factor requirement of rubber flat sheet extrusion machine Shown as in  shown in  table 2 Choose the technical specification with the top 3 priorities: extrusion time/adjustment of thickness-thin/size of rubber sheet. To be used as a guideline to develop the rubber flat sheet press to meet the needs of the customers as possible.

Discuss and summarize research results
This research It was found that qualitative function distribution techniques could be applied in the development of rubber flat sheet presses to meet customer needs. By adopting the factors of customer demand in building a quality house (HOQ) to analyze the technical requirements of the priorities and use it as a guideline for the development of the rubber flat sheet press to meet the needs of the customer. most The technical requirements that were introduced in the development were the functionality of the machine. It was obtained by ranking the technical requirements by weight, significance, by comparison (% Relative) in the first 3 places, namely extrusion time of rubber, adjustment of thickness-thin and size of rubber sheet. The analysis has clearly shown the development of rubber sheet extrusion machine. In order to make the rubber sheet extrusion machine more efficient in work and help reduce the working time of the sample farmers and get the products according to the needs of the customers. www.psychologyandeducation.net