The company produces insulation bags, vacuum bag, aluminum foil bags, inflatable bags, shopping bags, shaped bags, woven bags, food bags, stand-up pouches, nozzle bags, bedding bags, garment bags, children's bags, thermal underwear, heavy package bags, valve bags, slip bags, cosmetic bags, zipper bags, ziplock bag, gift bags, industrial packaging bags and other plastic bags. A production process, and printing documents to determine Size: About vest bag specifications, similar Shandong valve bag manufacturers, non-uniform specifications can be customized according to customer requirements. General specifications such as: 20 * 32cm, 25 * 40cm valve bag factory in Tianjin, 30 * 48cm, 35 * 55cm. Standards based on the thickness of the plastic bag so that a monolayer of not less than 0.025mm. According to the document printed sample, or the customer to design a good manufacturer will also allow manufacturers took the design. 2, carried out according to the order quantity blown film, blown film refers to the plastic particles were heat-melted, extruded through an extruder, and then blown by a blower of a plastic plastic film processing technology. Plastic vest bags made of high density polyethylene (HDPE, also known as the low-pressure feed) as raw materials. 3, plastic bags printed vest is generally relatively simple, the color is not complicated, simple and concise. 4, and then followed by sealing and cutting. 5, sealing and cutting is to be sealed and the hollowing out of the valve pockets printed reel is the final step in forming the vest pocket. 6, forming - packaging - shipping. The company produces insulation bags, vacuum bag, aluminum foil bags, inflatable bags, shopping bags, shaped bags, woven bags, food bags, stand-up pouches, nozzle bags, bedding bags, garment bags, children's bags, thermal underwear, heavy package bags, valve bags, slip bags, cosmetic bags, zipper bags, ziplock bag, gift bags, industrial packaging bags and other plastic bags. Synthetic plastic resin is the main component, the content in plastics is generally 40% to 100%. Due to the large content and nature of the resin often determines the nature of the plastic, so people often put plastic resin as a synonym. Such as polyvinyl chloride resin and PVC, phenolic resins and phenolic confused. In fact, resin and plastic are two different concepts. The original polymer resin is a raw, it is not only used in the manufacture of plastic bag manufacturers in Liaoning valve, but also paints, adhesives and synthetic materials. In addition to a tiny percentage of the plastic resin containing 100 percent, the vast majority of plastic, in addition to the main components of the resin, but also need to add other substances. Shen Hai packaging (Figure), Tianjin valve bag manufacturers, valve bag provided by Xiongxianshenhai packaging color Limited. Xiongxianshenhai packaging color Limited (www.shenhai6688.com) (www.shenhai6688.com) adhere to the "people-oriented" business philosophy, has a professional staff, and strive to provide the best products and services to contribute to the community, and Welcome to the new and old customers to visit and sincere cooperation for a better future. Shen Hai Packaging - your trusted friend, Company Address: Hebei Baoding City Industrial Park Xiong packaging, Contact: Zhang Zhiwei.