Coffee Press Tea Marker

Hygienic Check for the cover and the pressure bar, cross piece, spring pressure plate, spring, filter screen and nut that make up the pressure filter assembly

Smell Check

Cup body

The deviation of cup volume shall not be greater than ± 10%

The optical path difference caused by the maximum permanent internal stress after the annealing of the cup shall not exceed 20nm/mm

There shall be no crack and damage after the temperature resistance test

After the mechanical impact test, the cup bottom shall be free of cracks and damages

The roundness deviation of the cup body shall not be greater than 0.8mm.

The cup body water outlet (duck mouth) should be symmetrical with the cup handle, and the cup mouth should be smooth

Cup sleeve

Stainless steel cup sleeve

Polished surface roughness Check

Sanding surface roughness Check

The lower end face of the base shall be flat, and the unevenness shall not be greater than 0.3mm

The crimping shall be smooth and continuous, the cutting edge shall be free of cracks, edges and burrs, the handle edge shall be smooth and smooth, and the whole shall be clean and tidy without color difference, oil stain and scratches.

There shall be no false welding or missing welding at the spot welding point, and there shall be no obvious discoloration or black spot at the spot welding point.

After the strength test of the cup handle, there should be no obvious deformation, and the welding point should not be damaged

Plastic cup sleeve

Sand blasting surface shall be uniform.

Two batches of air shall not be greater than 0.5mm

Filter press assembly

Tighten the pressure bar and nut, and the cross piece and spring pressure plate shall be able to effectively clamp the filter screen through the spring without looseness.

The pressure bar shall be vertical to the cross piece and spring pressure plate.

Performance

The teapot shall be placed stably and shall not be dumped after the 15 ° inclination test.

The cup body and cup sleeve shall be properly matched, and the cup sleeve and cup body shall be inverted without slipping

When the pressure filter assembly is pulled up and pressed down, there shall be no obvious blockage and looseness, and the filter screen shall not be flanged.

When the filter pressing component is pressed down in place, the lower end of the nut shall not touch the inner bottom of the press pot. The minimum distance between the cross piece and the bottom of the cup body shall be 15mm~25mm

After the filter pressing component test, the fasteners shall be free from looseness, and the filter screen and pressure bar shall be free from obvious deformation or damage