Takeda Chemical Industries, Inc.

Ibaraki Seiki Machinery Company, Ltd.

Kazuo Konishi

Yasuo Sato

Kazuho Matsuura

Takashi Kuragano

Toshiya Kamikado

Hiroyuki Mitsudera

Masayoshi Nagano

A packaging device is provided which prevents trays accommodating packaged items from being broken due to the tension in a film acting from above. The sealing base and the sealer perform a box motion by the combination of the back and forth movement of the general frame, and the upward and downward movement of the sealing base and the sealer, and the film is welded onto the flange of the tray while in movement. In this case, by setting the upper limit of the sealing base to the lower surface of the flange of the tray, it is possible for the deck plate to receive the tension of the film acting on the tray through the packaged item.

Packaging device for covering and sealing cover film onto tray

A sealing and packaging device in which, simultaneously when a sealing base frame lifted upwards from a lower region towards a flange on the perimeter edge of a tray mounted on a desk plate makes contact with the flange, a touching base provided on a frame of the sealing base frame makes contact with the lower surface of the deck plate, and the tray is pushed upwards towards a cover film by means of the deck plate and sealing base frame, the cover film being welded to the flange of the tray. By means of the upward movement of the tray caused by the sealing base frame and deck plate, breaking of the tray is prevented by the deck plate on which the tray is mounted, even when the tensile pressure of the film or the reaction of urethane rubber members act respectively on the packaged item in the tray.

Sealing and packaging device for cover film on tray

The present invention heat-seals a cover film onto a tray accommodating an item to be packaged, without creating wrinkles in the film. In the present invention, respective touch bars provided at equidistant intervals on chains respectively and continuously move trays accommodating items to be packaged, and a frame to which sealers of the same outline as the trays are fixed moves back and forth at the same speed, in the same direction as the trays. A crank below the frame moving back and forth raises a sealing base frame upwards when the frame advances, the trays are pushed against the sealers positioned above the same, via the moving film, and the film is welded to the open edge of the trays. The movement of the sealing base frame is a box motion, and the efficiency of the sealing operation is increased.

A novel 1,3-dithiane of the formula ##STR1## wherein R.sup.1 is a di-substituted amino group; R.sup.2 and R.sup.3 are such that one of them is an electron-withdrawing group with the other being a hydrogen atom, a hydrocarbon group or heterocyclic group of the class consisting of thienyl, triazolyl, and pyridyl, which may optionally be substituted or that R.sup.2 and R.sup.3 taken together with the adjacent carbon atom form a spiro ring provided that at least one of R.sup.2 and R.sup.3 is a carbonyl group; X.sup.1 and X.sup.2 each is a sulfur atom and at least one of X.sup.1 and X.sup.2 may be oxidized, or a salt thereof, possesses very useful pesticidal actions.

Insecticidally, acaricidally, and nematocidally 2-amino-1,3-dithiane

Novel pyrimidine derivatives of the formula; ##STR1## ps wherein Ar is phenyl or naphthyl, which may be substituted by lower alkyl, lower alkoxy, lower alkylthio, lower alkylsulfinyl, lower alkylsulfonyl, halogen, nitro, trifluoromethyl or di-lower alkylamino; R.sup.1 is lower alkyl, lower cycloalkyl, trifluoromethyl, lower alkoxycarbonyl, phenyl or benzyl, and the phenyl may be substituted by halogen; R.sup.2 is hydrogen or lower alkyl; R.sup.3, R.sup.4 and R.sup.5 are hydrogen,lower alkyl, lower alkenyl or lower alkoxy, or R.sup.3 and R.sup.4 or R.sup.4 and R.sup.5 combine with each other to represent trimethylene, tetramethylene or butadienylene, or salts of them, are excellent antimicrobial agents.

Pyrimidine derivatives and agricultural uses

Organophosphates of the formula: ##STR1## wherein n means zero or an integer of 1 or 2, are new compounds having very good pesticidal activities against insects, mites, ticks and other pests without substantial toxicity to warm-blooded animals, fish and plants.

O-Ethyl S-n-propyl O-[4-methylthio(sulfinyl)(sulfonyl)-2(3)-methoxyphenyl]

New miticidal compounds of the formula ##SPC1## Wherein R represents lower alkyl or lower alkenyl, R.sup.1 and R.sup. 2 respectively represent lower alkyl and X represents oxygen or sulfur.

Growing community of inventors

Takatsuki, Japan

Kazuo Konishi