초록 ▼

A dustfree filling and sealing apparatus is disclosed. A pair of wrapping clean films 10 which are free of cleaning are supplied from a pair of wrapping clean film supply means 1. Two outer layer films 10b are peeled off and removed from the wrapping clean films 10 by a pair of outer layer film peel

A dustfree filling and sealing apparatus is disclosed. A pair of wrapping clean films 10 which are free of cleaning are supplied from a pair of wrapping clean film supply means 1. Two outer layer films 10b are peeled off and removed from the wrapping clean films 10 by a pair of outer layer film peeling-off means 2. Thus, clean surfaces of inner layer films 10a appear. The two inner layer films 10a are conveyed by a pair of inner layer film conveying means 4 so that these films are opposed. An object 15 is inserted between the inner layer films 10a by an object filling means 5. The inner layer films 10a are sealed by an impulse seal head 6. The present invention also discloses a wrapping clean film producing method and a dustfree container.

대표청구항 ▼

1. A method for producing a wrapping clean film, comprising the steps of:preparing a heat-resisting substrate; forming co-extruded films composed of at least two layers of thermoplastic resin films by co-extrusion; and layering and laminating the co-extruded films on both front and rear surfaces of

1. A method for producing a wrapping clean film, comprising the steps of:preparing a heat-resisting substrate; forming co-extruded films composed of at least two layers of thermoplastic resin films by co-extrusion; and layering and laminating the co-extruded films on both front and rear surfaces of the heat-resisting substrate by dry-lamination, wherein outermost thermoplastic films of the co-extruded films are peelable from inner thermoplastic films of the co-extruded films laminated to said heat-resisting substrate to form said wrapping clean film. 2. The method as set forth in claim 1, further comprising the step of:applying a bonding agent on both front and rear surfaces of the heat-resisting substrate, where said applying step is followed by said laminating step. 3. The method as set forth in claim 1, further comprising the step of:corona-treating the surfaces of the co-extruded films which are later placed in contact with the heat-resisting substrate during said laminating step, wherein said corona-treating step is followed by said laminating step. 4. The method as set forth in claim 1,wherein said co-extruding step is performed at a temperature of 290° C. or below. 5. A method for producing a wrapping clean film, and for wrapping an object in the wrapping clean film, comprising the steps of:preparing a heat-resisting substrate; co-extruding films comprising at least two layers of thermoplastic resin; dry-laminating the co-extruded films on both front and rear surfaces of the heat-resisting substrate, so as to produce a wrapping clean film of the co-extruded films wherein the wrapping clean film comprises inner thermoplastic films of the co-extruded films laminated to front and rear surfaces of the heat-resisting substrate having peelable outermost thermoplastic films; peeling off the outermost thermoplastic resin films from the inner thermoplastic films of the wrapping clean film just outside a clean room and supplying the wrapping clean film to the clean room; and using the wrapping clean film within the clean room to wrap an object. 6. The method of claim 5, further comprising the step of applying a bonding agent on both front and rear surfaces of the heat-resisting substrate, wherein said applying step is followed by said laminating step.7. The method of claim 5, further comprising the step of corona-treating the surfaces of the co-extruded films which are later placed in contact with the heat-resisting substrate during said laminating step, wherein said corona-treating step is followed by said laminating step.8. The method of claim 5, wherein said co-extruding step is performed at a temperature of 290° C. or below.