JPS61123523A - Method and device for manufacturing plastic product - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of Application The present invention has an indicia stamped on it, which indicia is exposed so as to be seen during use of the product so marked. The invention also relates to an improved method and apparatus for making reinforced plastic products that are protected against removal by external causes.

BACKGROUND OF THE INVENTION In the past, plastic products were commonly marked by labeling or by affixing signs, tags, or the like.

Other conventional methods include, for example, inserting a fully cured laminated or decorated charge of the desired size and shape into a production mold in order to give the product a clear marking. That's true.

This charge is typically held in close contact with the raw material, such as by a clamp, and is also typically placed on top of the raw material, and a spray of gel or the like is applied to the charge. is used to connect raw materials.

However, labels applied to plastic products by conventional methods have problems such as being easily peeled off or double-labeled.

The present invention therefore provides for a plastic product produced by a continuous tensile extrusion feeding process, in particular having a reinforcing material, to be marked during the tensile extrusion, in particular on the outer surface of said reinforcing material. The objective is to provide a method for providing a final product with markings or indicia that are obvious to a person observing the product.

It is another object of the present invention to have a method by which an indicia can be provided on a plastic article, such as some mark that is integral with the plastic article and visible on it.

It is yet another object of the present invention to obtain an apparatus capable of applying said indicia during a continuous feed pull extrusion process on a product manufactured by the continuous feed pull extrusion process.

Means for Solving the Problems The present invention can be preprinted on matte materials or
The strip material with markings stamped or otherwise stamped thereon during the tensile extrusion process is subjected to tensile extrusion after impregnation of the raw material and before its shaping and curing. The labeled material is in surface contact with the raw material and, when combined, removes excess resin or similar material from the combined raw material. It is characterized in that it forms a transparent external film on the surface of the plastic reinforcing material which is squeezed out and marked during integration. Note that in this case, the tension extrusion process is maintained at a constant speed.

Further, according to the present invention ζ, the marking may be, or,
If desired for some products, it can also be placed on the inner surface of the product. According to one embodiment of the present invention, the marking may also be placed on a strip of reinforced plastic material or other material suitable for stamping, printing, or displaying according to any recommended method. The reinforced plastic material is impregnated with a resin or the like and a quantity of the impregnated material is oozed or squeezed out of it before being contacted with the reinforced plastic material. The applied marked material is preferably porous, so that excess wet material from the impregnated, squeezed material passes through the marked layer of material, forming and curing. It is desirable that a film or protective surface can be formed thereon in between.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings showing embodiments of the apparatus. In addition, in the drawings, similar members are given the same reference numerals.

Figures 1 and 2 show the subsequent stages of continuous constant tension extrusion feeding of plastic reinforcement material.

This equipment consists of feeding, tensioning, proper alignment and advancing, impregnating, forming, curing and tensioning means attached to a long, relatively narrow tension extrusion line of the type known in the art. The tension extrusion process involves the feeding of coarse strands or strips 7 of glass fiber or the like from a spool 6 placed at the inlet end 10 of the machine; ' and 91 are collected together with mat reinforcing materials 8 and 9 supplied from
Impregnation bath 16 containing resin or the like under tension through spaced plow combs 11 and 12
guided by. The rough strands 7 are preferably arranged at an angle vertically from the spool rack 6 to the plow comb plate 11.12, as shown, and the mat materials 8, 9 are
Preferably, they are aligned at right angles to the plow combs 11.12.

The coarse twine 7 and the mat materials 8 and 9 are attached to the plowing comb board 11
．． 12 spaced apertures (not shown)
and is fed into a wet tank or resin impregnation tank 13 in which other additional structural materials 14, namely reinforcing materials and surface-forming materials, are added to the raw material, Impregnated. This additional reinforcing and surfacing material 14 is supplied from a spool 15 and 151 mounted on the support frame 16 above the wetting tank or impregnating tank 16; , polyester, polyethylene, vinyl ester,
A resin such as phenolic, epoxy, or other thermoset resin is provided. Suitably, the polyester resin can be mixed with filler catalysts, pigments, UV additives, lubricants, etc. Upon traversing the bath, the additional structural material 14 is arranged in line with the rough strands 7 and reinforcing strips 8, 9 and impregnated with resin. Said combined structural material 14 is then drawn through a bath 13 and passed through a squeezing device whereby excess resin or other wet material is exuded or squeezed out of it. to form an elongated reinforced plastic material. In this regard, a perforated stamped or otherwise marked layered strip 20 is fed at a rate compatible with the feeding of the rough strands 7, strips 8 and other structural materials 14. 2.6 at the bottom of the tensile extrusion line
and move as shown as X in Figure 6 and come into contact with the lower surface of the raw material. The stamped [Ne
Material 2 which may be Xu8 J or similar
Due to the porosity of 0, this material is moist and
By passing through rotating rollers 22 and 23, as best shown in FIG. Seeps through openings in the material. Here, “NeXuθ” is Burlington Gl
Ass Fabric Company's trade name for polyester fiber surfacing fabrics used in applications such as reinforced plastic piping systems. It is used as an apertured or non-apertured material with different fiber arrangements. This porous material is made of polyester,
Quickly wetted by vinyl ester or epoxy laminating resins. In addition to wet reinforced plastic materials, other suitable materials suitable for being stamped or otherwise marked may also be used; however, these materials Not only does it allow wet and excess impregnating resin, or the like, to pass through it and form a film of resin, etc. thereon, but it also prevents markings thereon from smearing or unevenness. It must have sufficient substantially uniform porosity to allow the surface to be reproducible without porosity.

This material also has a sufficiently high air permeability to allow both gas and liquid to flow through it. A film or coating of polyester resin material is
Preferably, it is semitransparent, not opaque, and preferably has a "transparent" coloring. This is because the resin is preferably “transparent”;
This is because it must have a sufficiently low "concealment" ability.

As discussed above, the raw material that has been contacted with the surface-forming imprinted material now forms a unitary material, which unitary material is then used in U.S. Patent No. 2.87.
No. 1,911, it is pulled through a forming station 25 by a tensioning device, passed through a tension extrusion die and a zone heater to cure it, and as shown by 26. The speed at which this product moves and the tension on the material are controlled by the controller 27. Then product 26
is cut to the required length.

Figures 7 and 8 are stamped [N
exus J is shown formed into a groove suitable for use as a side rail of a ladder.

In a preferred embodiment of the present invention, as shown in FIGS. 1-6, a high-temperature stamping unit 301 is arranged below the supply lines of the rough twine 7 and the structural materials 8, 9 on the plow comb plates 11 and 12. is established between. 2nd and 6th
As explained earlier, as best shown in the figure,
Opened or unopened “Nexus J
The surfacing material to be stamped, which may alternatively be other porous surfacing material, is mounted on a roller 31 and continuously fed under an idler roll 32 to form a high temperature stamp. It passes through the lower part of the die 35 carved with the unit so'. Foil 3 from foil supply roller 54
S can move the polar stamp die 35 in either direction as required.
and the top of the surface-forming material such that high pressure and heat are applied to the material 20 for a defined dwell time as the material 20 is passed through the bottom of the die 65 and placed onto the substrate. When applied to the material 20 via the die 65 by the press of the stamping unit 1-5o', an indicia is stamped onto the material. A flat carved die 35 mounted on a metal block 36 is disclosed. The timing of the strokes of the stamp unit so' as well as the temperature of the high temperature stamp unit 30 and the blind die 35 and the required stop time for stamping the material are controlled from a control panel 40, which is shown in the drawings. So, power on switch SO, signal light 50'1 for that, control panel fuse 51, air cylinder head energization "on" light 52, air cylinder head operation toggle switch 54, stop time control knob 53, air cylinder downlight 55, motion It consists of a toggle switch 56 for initiation and movement mode, a heat indicator light 57 and a die temperature control knob 58.

As shown in FIGS. 2 and 3, a high temperature marking unit 30
To the left of unit 30 is a feed accumulation assembly 60 through which the stamped material 35' passes after stamping.
' is adapted to provide an accumulation of material fed from 100 to 100, giving a certain tolerance for downtime in the imprint, so that the imprinted material is fed continuously and uniformly, as previously described. , allowing the impregnated material to be contacted at the feed rate of the raw material. The storage assembly 60 is
Support 64 with spaced idler rollers 61
The stamped material runs under this roller 61 and is fed upwardly so as to pass over idler rollers 62 and 66 mounted on the upper part of the support 64. any desired surface of the wetted and squeezed material, which is continuously fed under or over the impregnation tank 13, as desired, at a feed rate of
Or it comes into contact with the laminate. By adjusting the cylinder means 65, the roller 63 can be raised or lowered to accumulate less or more material.

Rather than using the high temperature pole unit 1-30' in Figure 6,
"The material supplied from a roll of Nexus J or other pre-stamped or marked surfacing material, as shown in FIG.
It will be appreciated that it can be fed at a rate compatible with the feed of the tension extruded material and contacted with the raw material to give it a marked surface as described above.

It should also be understood that the imprint need not be provided on the outer surface of the molded material, as shown, but can be provided on any surface thereof.

As shown, the position of the indicia on the final product can be controlled by the timing of the supply of the surfacing material to be stamped and, as in the ladder rail shown, the position of the indicia on the finished product. It is carefully positioned between the top and the fittings, such as brackets, so that the overall marking is clear and unobscured. However, if recommended, full-page markings or other markings may be used.

Here, in this specification, when reference is made to a "reinforcing material", this term is intended to include any material that can be added to a material to improve the physical properties of this material. I want to be understood.

In the present invention, curing of the raw material sets a pattern, indicia, indicia, etc., and provides a translucent or transparent resin coating over said pattern, etc. by curing of the excess material exuded over it. The invention has been described with respect to one line of feed. However, it is understood that more than one line can be pulled out and stamped, as shown in FIG. 1, and that these lines can be advanced sequentially and simultaneously. Stamp your seal,
In the preferred form of the invention shown in FIG. 3 for providing the surfacing material, in this case two press-like means operate like the hot stamps described above; Or, as suggested, it can also be used operating in an alternating manner. Both presses or feed mechanisms are identical. Therefore, only one press or feeding means has been described above.

Although the invention has been described in terms of preferred embodiments, it will be obvious that many modifications and extensions may be made without departing from the spirit of the invention.

Effects of the Invention - Since the present invention has the above-described structure and operation, it can be applied onto plastic products, especially plastic products having reinforcing materials, without easily peeling off and being integrated with the product. The present invention provides a method and apparatus that can provide a standardized sign.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of the apparatus of the present invention, FIG. 2 is a front view thereof, FIG. 6 is a longitudinal cross-sectional view showing a high-temperature stamping press and elements cooperated therewith, and FIG. , a diagram showing recommended porous mat materials, Figure 5
Figure 6 shows the feeding and splicing of the marked mat with the reinforcing plastic raw material; Figure 7 shows the shape of the ladder rail after forming and curing. FIG. 8 is a sectional view taken along line 8--8 of FIG. 7, and FIG. 9 is a front view showing another embodiment of the present invention. 7. Rough twine; 8, 9. Mat material; 16. Impregnation tank; 14. Surface forming material; 17. Squeezing device;
20...Porous stamped strip; 26...Product.

Claims (1)

[Claims] 1. In a continuous tension extrusion method for manufacturing reinforced plastic products, continuously feeding reinforcing material through a resin impregnation device and marking the impregnated material. continuously supplying a marked porous surfacing material; adding the labeled porous surfacing material to the impregnated raw material; and from the impregnated raw material. consisting of exuding excess resin through the marked surfacing material, forming a film over the marking, and curing the product thus synthesized. A tensile extrusion method characterized by: 2. The method of claim 1, wherein the excess resin is removed from the impregnated raw material before adding the labeled surfacing material to the impregnated raw material. Tensile extrusion method. 3. A tensile extrusion method according to claim 1, wherein the synthesized product is shaped into its final shape before curing. 4. A row of indicia-bearing surfacing material is arranged in spaced relationship to a point beyond the impregnated point with another tension-extruded material to provide a surface with indicia thereon. A method as claimed in claim 1, characterized in that the compression device is brought into contact therewith by a compression device. 5. A patent in which the resin added during impregnation, when cured, forms a transparent resin coating on the surfacing material bearing the markings, allowing the markings to be seen through the coating. A tensile extrusion method according to claim 1. 6. In an apparatus for continuously making and marking linear articles consisting of reinforcing material, plastic material and porous marked material, for drawing the reinforcing material under tension. a feeding device, a device containing a bath for thoroughly wetting the reinforcing material, and a device for combining the thoroughly wetted reinforcing material and the marked material; A device characterized by comprising a device for joining materials together and a device for curing the same. 7. The device of claim 6, wherein the complete wetting device comprises a polyester resin. 8. The device of claim 6, wherein the complete wetting device includes a vinyl ester resin. 9. The device of claim 6, wherein the complete wetting device contains a phenolic resin. 10. The device of claim 6, wherein the complete wetting device includes an epoxy resin. 11. The device of claim 6, wherein the complete wetting device includes a polyethylene resin. 12. The device of claim 6, wherein the complete wetting device includes a thermosetting resin. 13. The device of claim 6, wherein the porous labeled material has a sufficiently high air permeability to allow both gas and air to flow therethrough. 14. The device of claim 6, wherein the bath is comprised of a pigmented resin which is translucent.