Members of Pineapple Leaf Group have gathered to produce paper from pineapple leaves left from pineapple harvest. The obtained paper has been used to make various types of products such as picture frames paper bags envelopes flowers key chains and so on for selling to visitors at tourist destinations and to those who came to observe the group’s production of paper and other local goods. However it is found that the product is not of much interest for the tourists as it should be. For this reason the researcher considers seeking appropriate solution to the group by using the pineapple leaves to make bas-reliefs with an aim to add value to pineapple leaf paper. From the creation of mold made of plaster and that made of resin and use both molds to make bas-reliefs it is found that the bas-reliefs obtained from resin mold are more beautiful and easier to produce. This is because resin mold is more durable clearer and lighter. The researcher has presented the bas-reliefs to 448 tourists who have come to visit the project during the period of one year and asked for their opinions and satisfactions. The results are that most of the respondents (327 persons) are female which accounts for 72.99% of all. Most of them or 352 persons (78.57%) obtain the secondary school diploma. The age range of most of the respondents (154 persons) is 31-40 years amounting to 34.38%. As for satisfactions of the quality of bas-reliefs made from pineapple leaves most of the respondents (72%) expressed “strongly agreed”. 75% of the respondents are “strongly agreed” with the product beauty. In terms of durability most of the respondents (61%) are “strongly agreed”. Concerning appropriateness of the product as souvenir most of the respondents (77%) expressed “strongly agreed”. Finally 73% of the respondents are “strongly agreed” with the idea that the product is potential for sale.

Bottle of poly propylene (Polypropylene: PP) to replace conventional non-conventional polycarbonate bottles. (Polycarbonate) are used as bottles and water bottles toys household goods which are BPA-contaminated and poly ethylene Terephthalic acid (Polyethylene. Terephthalate) PET water bottles juice bottles. Bottles And bottles and other drugs and chemicals have been canceled. Then turning to the bottle to PP because of the lightweight bottles float on water. Plastic and white The plastic safety can be reused many times (even used) in the UK has the plastic water bottles poly propylene and (Polypropylene: PP) to make water bottles so long but not as popular as bottle caps. open it (lid torn) bottle shape is beautiful with a little input. The process is a extrusion blow but from research using the dryer Injection blow (Stretch Blow) has studied the creation of injection molded preform 19 gram in order to blow a 500 ML size thickness. Preformed from 3.34 mm to 3.46 mm the average measured height of the preform from a mean of 70 mm measured at 69.88 m. m. the oldest of the preform. the average measured 25 mm and 24.96 mm is how a 500 ML size bottle blow molding blow molds percent discrepancy between the form specified. Average Percentage 0.0853 experimental results Blow the preform 19 gram of the injection can be molded into the bottle completely and can not be used as drinking water is due to the equipment used. blown trial Need to study next.

This research aimed to determine the optimal sand mold mixture’s ratio by using return sand bentonite water content and new sand component. Then the properties of the mixture according to the standards of American Foundrymen’s Society include the ability of compactability moisture content permeability and green compressive strength. This study applied mixture experiments and response surface methodology to determine an optimal sand mold mixture components condition. After the experiment and linear programming it indicated that the condition was at return sand (95.5387 %) bentonite (1.130102 %) water content (2.331196 %) and new sand (1 %). The green sand mold has compactability (58.37923 %) permeability (73.80148 %) moisture 6.5 % and green compressive strength (0.53 Kg/cm2). At this condition the cost is 11.31579 baths per kilogram.

The shrinkage depended on the product shape and the type of plastic used in blow This research aims to study the shrinkage percentage of plastic polyethylene terephthalate grade : N1 used with the make blow mold in 2 stages. The testing results were as follow. vertical shrinkage percentage ( Z axis ) was 0.787 percentage and horizontal shrinkage Percentage ( XY axis ) was 2.13 percentage

Material selection for mold making are not only material prices wages but also there are other factors such as thermal strength shine and resistance to temperature changing that caused distortion and cracks. Preform injection molding from Polyethylene Terephthalate (PET) consumes time for drying granulated plastic in 4 – 6 hours at 140 - 160°C and injects at 280 – 300 °C. This is a very high temperature to inject into mold at 10 – 15°C in cool area. The material for mold making must be able to resist to thermal shock. Today molding machines are made of grade P20 steel (Standard JIS) to produce preform that takes long cycle time due to poor cooling. The research aims to compare the pricing time in mold making to preform injection time that made of aluminum -A7075 grade and grade P20 steel. The experiment is to make a mold that made of aluminum A7075 grade and grade P20 steel injects 15 gram preform. The PET is used to blow into a blow mold with pressure at 30 – 35 bar (Two – Stage) that are 2 bottles of 350 ML. The results of material selection for preform mold making showed that aluminum A7075 grade is cheaper 27.04% the mold price is cheaper 23.6% and consumes less cycle time than grade P20 steel.