JPS608932Y2 - abrasive material - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an abrasive material such as an abrasive paper or an abrasive cloth used for an abrasive puff, an abrasive belt, or the like.

Conventionally, this kind of abrasive materials include sandpapers in which abrasive grains are bonded to the surface of a flexible sheet base material such as paper or cloth with adhesive, and sandpapers in which abrasive grains are bonded to the surface of a flexible sheet base material such as paper or cloth, and sandpapers that are coated with oils and fats such as stearic acid and beef fatty acid on the base material surface. Generally, products coated or impregnated with a mixture with abrasive grains are known, but the former becomes hard due to hardening of the adhesive, making it unsuitable for puffs etc. that require flexibility; In the latter case, although the flexibility is maintained, the abrasive grains tend to peel off during polishing, and therefore there is an inconvenience that the abrasive grains must be replenished afterwards.

The present invention provides an abrasive material that maintains the flexibility necessary for puffs and the like and can secure sufficient abrasive grains, and the details thereof will be explained below with reference to the drawings.

In Figures 1 and 2, a base material 1 is made of cloth such as woven fabric or knitted fabric, or a flexible sheet material such as paper or non-woven fabric, and abrasive grains are attached to the surface of the base material 1 in the form of rectangular spots using an adhesive. The bonded abrasive grain portions 2 are bonded and formed in the shape of a base grain at appropriate intervals, and the abrasive grains and The oil and fat abrasive grain portion 3 is shaped by applying or impregnating it with a mixture of oil and fat.

The adhesive of the adhesive abrasive part 2... is glue,
Synthetic resin adhesives such as phenol, epoxy, vinyl, and polyester adhesives, synthetic leather rubber adhesives, and the like are used.

In addition, adhesive abrasive part 2 is formed by applying vinyl chloride resin, polyvinyl alcohol, etc. as an adhesive, mixed with abrasive grains and a foaming agent to base material 1, and foaming the adhesive. You can also.

Further, as the oil and fat in the oil and fat abrasive grain portion 3, stearic acid, beef fatty acid, paraffin, and others are used.

With the above configuration, the adhesive abrasive grain portion 2 becomes hard as the adhesive hardens, but the oil abrasive grain portion 3
This leaves the base material 1 with a considerable degree of flexibility.

- As an example, if circular abrasive sheets are cut from the above abrasive material, many of these circular abrasive sheets are attached to a core to form a puff wheel, and the puff wheel is used for polishing, the appropriate flexibility Effective polishing is performed with sufficient abrasive grains in the adhesive abrasive part 2 and the oil abrasive part 3 while maintaining contact that conforms to the external shape of the object to be polished.

The spot shape of the adhesive abrasive grain portion 2 may be in various shapes other than rectangular, triangular, hexagonal, circular, etc., and the arrangement thereof may be staggered or the like.

In the example shown in FIG. 3, circular adhesive abrasive grain portions 2a are arranged in a staggered manner.

Furthermore, the adhesive abrasive grain portion can be formed not only in a spot shape but also in a band shape.

Fig. 4 shows an example in which straight band-shaped bonded abrasive grain portions 2b are formed in parallel at intervals, and Fig. 5 shows an example in which continuous chevron-shaped band-shaped bonded abrasive grain portions 2C are formed. An example of parallel shape, also the 6th
The figure shows an example in which linear band-shaped adhesive abrasive grain portions 2d are shaped like a lattice.

Another embodiment shown in FIG. 7 is an adhesive abrasive part 2e...
The oil and fat abrasive grain portion 3e extends not only within the interval between .
This is an example that is substantially the same as in FIG. 2, and provides substantially the same effects.

In addition, in each of the above examples, abrasive grain layers may be formed on both sides of the base material.

Further, the area, width, mutual spacing, etc. of the bonding abrasive portions on each side are appropriately determined depending on the material and thickness of the base material, the type of adhesive used in the bonding abrasive portions, and the like.

The abrasive material of this invention is able to maintain appropriate flexibility and sufficient abrasive grains, and therefore, when used in a puff wheel, etc., it maintains contact that conforms to the external shape of the object to be polished while retaining sufficient abrasive grains. Effective grinding and polishing can be performed.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, and Fig. 1 is a partial plan view, Fig. 2 is an enlarged sectional view taken along the line ■-■ in Fig. 1, and the following Figs. 3 and 4 show other embodiments. , FIGS. 5 and 6 are partially plan views, and FIG. 7 is a partially enlarged sectional view. 1, ia, lb, lc, ldt l
e""" base material, 2, 2a, 2b, 2C92d,
2e------Adhesive abrasive part, 3t 3at 3bt
3ct 3dt 3e--Oil abrasive part.

Claims (1)

[Scope of Claim for Utility Model Registration] A large number of bonded abrasive grain portions formed by bonding abrasive grains with an adhesive are formed on the surface of a flexible sheet base material at appropriate intervals, and at least the above bonded abrasive grains are formed on the surface of a flexible sheet base material. An abrasive material in which a mixture of abrasive grains and oil is applied within each interval of the parts.