Environmental protection type HPVC door frame

An environmentally friendly, PVC resin powder technology, applied in the field of plastic materials, can solve the problems of excessive harmful substances and affecting the export of products to the EU, and achieve the effect of low price
CN101121802AInactive Publication Date: 2008-02-13HISENSE HOME APPLIANCES GRP CO LTD
0 Cites 17 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HISENSE HOME APPLIANCES GRP CO LTD
Publication Date
2008-02-13
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
Patent Text Reader

Abstract

The invention discloses an environment-friendly HPVC door frame, which is obtained by kneading and extruding. The main raw materials include PVC, a stabilizer, and a surface treatment agent, and are composed of the following substances by weight: PVC resin powder: 45-55, calcium Zinc composite stabilizer: 1-6, chlorinated polyethylene: 1-6, stearic acid: 0.1-1 part, polyethylene wax 0.1-1 part, ethylene bisstearamide: 0.1-0.8 part, acrylate copolymer Matter: 1-3, active calcium carbonate: 8-20, dioctyl phthalate: 0.1-1.5, epoxy soybean oil 0.3-1.2, triphenyl phosphite: 0.2-1.2, toner: 0.2-1 . The preparation method includes the steps of compounding, kneading, granulation and door frame extrusion. The performance index of the environment-friendly door frame prepared according to the invention meets the requirements of the RoHS directive, and the new formula does not affect the processing performance of the original equipment; the raw materials of the formula are easy to obtain and the price is low, and are suitable for industrial production.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of plastic materials, in particular to an HPVC (rigid polyvinyl chloride) door frame applied to products such as refrigerators. Background technique

[0002] From July 1, 2006, the EU Directive on the Prohibition of Hazardous Substances in Electronic and Electrical Equipment (RoHS Directive for short) began to be implemented. All plastic parts of refrigerators exported to the EU and other countries must meet the requirements of the RoHS Directive, namely polybrominated biphenyls (PBB), polybrominated diphenyl ethers ( PBDE), lead (Pb), mercury (Hg), hexavalent chromium (Cr 6+ ) content is not allowed to exceed 1000ppm, while the content of cadmium (Cd) is not allowed to exceed 100ppm.

[0003] Existing refrigerator door frame strips are extruded by HPVC (rigid polyvinyl chloride). The most commonly used heat stabilizers in HPVC formula systems are lead salts or cadmium salts. There are many plastic parts u...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More