Preparation method of PU putamina having various textures and color diversification

A technology of color change and film shell manufacturing method, which is applied to household appliances, other household appliances, household components, etc., can solve the problems of expensive mold production, difficult processing, expensive production cost, etc., to achieve rich choices, easy production, and low cost. Reduced effect

CN101181822AInactive Publication Date: 2008-05-21友嘉兴业股份有限公司
0 Cites 11 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2008-05-21
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a production method of a multi-grain and color-varied PU film shell, which aims at forming grain on the surface of a plastic shell. Firstly, patterns are processed inside a die cavity of a die, but carving patterns in the die cavity is not only expensive but also difficult; in addition, some patterns can not be carved. The production method of the invention mainly select a PU, polyurethane film shell with demand grain and color, and the film shell is put inside a preset shaped thermoplastic die and is pressed into shell surface shape through the thermoplastic die, and then a PU molding body with the shell surface shape and surface patterns and color is moved to an ejecting molding die, fused plastic materials ejected are combined with the PU molding body, thus forming the shape of the die cavity. After being cooled and taken out, a colloid shell with surface pattern and color is obtained.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention provides a method for manufacturing a PU film shell with various textures and color changes, and in particular, provides a method for forming patterns and colors of plastic surface layers that can be manufactured in small quantities and can be easily achieved. Background technique

[0002] see figure 1 As shown, it is a conventional injection molding mold, which mainly includes a male mold 1 and a female mold 2. If you want to produce a housing for a digital electronic product today, and hope that the surface of the digital electronic product housing can show a lattice pattern or a honeycomb Concave-convex pattern... When there are beautiful patterns or colors, it is necessary to process the opposite concave-convex pattern in the corresponding mold cavity 3, so that when the plastic material (acrylic-butadiene-styrene polymer (ABS), polycarbonate ( When the Polycarbonate (PC)) is injected into the mold cavity 3 to form the shell,...

Examples

Embodiment Construction

[0025] see figure 2 As shown, a kind of PU film shell manufacturing method with various textures and color changes, the manufacturing method of one embodiment is:

[0026] (a) PU film 10: it is a PU film with patterns and colors on the surface;

[0027] (b) Thermoplastic molding type 11: use a PU film with patterns and colors to be placed in a thermoplastic mold with a flat concave-convex mold with a shell surface shape, and then thermoplastically molded into a shell surface shape and a PU moldings with patterns and colors;

[0028] (c) Injection molding 12: The PU molded body with the shell surface pattern and the pattern and color is then placed in the cavity of the injection molding die, and the plastic material is injected into the mold to combine the plastic material and the PU molded body. cooling out;

[0029] (d) Molding 13: Molding into a shell with patterns and colors on the surface.

[0030] see image 3 As shown, it is an embodiment of the thermoplastic mold....